Both 'people's lives' and 'people's life' are correct, but they are used in different contexts. 'People's lives' is the plural form and is used when referring to the lives of multiple individuals.

Both phrases are correct, but they are used in different contexts. 'People’s daily lives' refers to the routine, activities, and experiences of individuals on a day-to-day basis. On the other hand, 'people’s life' is a more general term that encompasses the entirety of an individual's existence.

Both 'daily lives' and 'daily life' are correct, but they are used in different contexts. 'Daily lives' refers to the lives of individuals on a daily basis, while 'daily life' is a more general term referring to the routine, activities, and experiences of everyday life.

These are both correct phrases, but each one would be used in a distinct context. 'In our daily life' is used when referring to life in general, while 'in our daily lives' is used when talking about the lives of individuals on a day-to-day basis.

“Lives” is the plural of life. “People” is a plural noun we then say “people's lives”. We talk of other areas of people's lives and older people's lives, young people's lives We can discuss people's lives beyond their workplaces.